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266400 (2007 EW187)
Classification: Main-belt Asteroid          SPK-ID: 2266400
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3045938492174472 8.0704e-08  
a 2.556146162560708 1.7479e-08 au
q 1.777559763743936 2.0744e-07 au
i 10.2840008282316 5.1408e-06 deg
node 73.66757151188432 3.2117e-05 deg
peri 359.155435992085 3.3858e-05 deg
M 146.3211193411204 1.1103e-05 deg
tp 2458393.789562777495
(2018-Oct-02.28956278)
4.6167e-05 TDB
period 1492.715189602304
4.09
1.5311e-05
4.192e-08
d
yr
n .2411712579249045 2.4737e-09 deg/d
Q 3.334732561377481 2.2803e-08 au
  Orbit Determination Parameters
   # obs. used (total)      415  
   data-arc span      15482 days (42.39 yr)  
   first obs. used      1977-12-07  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57925  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 15:23:48  

Additional Information
 Earth MOID = .79242 au 
 Jupiter MOID = 1.97353 au 
 T_jup = 3.349 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO470830  

266400 (2007 EW187)          Discovered 2007-Mar-15 by CSS at Catalina
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2007 EW187 = 1977 XC3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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